Description
Plastic
Beads
Nylon
String
Beads
wood
Therapeutic
heavier cords
Product description
- Function: The Maddox rod is a lens composed of parallel plano convex cylinders that causes a point source of light to appear as a line or streak of light perpendicular to the axis of the cylinders. When used with red/green glasses or a red Maddox lens, it helps dissociate the eyes to assess eye alignment issues like strabismus and measure ocular torsion.
- Color and Angle: The “Green Maddox” part of the name refers to the color of the lens. The “JVMLG” likely refers to the manufacturer, Jutron Vision (JV), and possibly other product specifications like angle (commonly available in 90° or 45°) and diameter (often 38mm or 50mm).
| Topic | Discription |
| Purpose / Target Users | The device is a Maddox test lens — likely used by optometrists, ophthalmologists or orthoptists to assess ocular alignment/torsion (e.g., when one uses a Maddox rod/lens to induce a streak and measure vergence or phoria). |
| Optotypes / Symbols | There’s no mention of optotypes (letters, numbers) or symbol sets — because a Maddox lens typically generates a streak, not letters. |
| Scaling / Spacing | No data on line width, spacing of the streak, scaling of the image, etc. |
| Range of Acuity / Line Sizes | No specification of acuity range, line-sizes, or how fine the streak is. Maddox lenses are accessory lenses, so typical acuity specs aren’t given. |
| Testing Distance | Not mentioned. What distance should the patient work at when using this lens (e.g., 6 m / 20 ft / 40 cm)? Not indicated. |
| Physical Size & Portability | No detailed dimensions (diameter of lens, rim size, thickness). |
| Mounting / Display Features | It appears to be a “drop-in lens” that fits into a trial frame’s lens ring (standard trial lens ring) oriented at a given angle (45° or 90° in other variants). For JVMLG the listing does not specify the angulation, but other Good Lite products have 45° or 90° orientations. For example: “Maddox drop-in lenses mount in trial rings oriented 90° to the handle.” |
| Included Accessories / Extras | The product listing does not list accessories or extras (e.g., case, dust cover) for this SKU. |
| Durability / Material Qualities | No detailed info on lens material (glass vs acrylic), coatings (anti-scratch/AR), rim build quality or longevity. |
| Usability | While drop-in design is implied, there’s no detailed ergonomic description (e.g., how easy to insert, how well compatible with various trial frames). |
| Marker of Quality | The listing simply states “Green Maddox Lens” — but doesn’t elaborate on the clinical protocols or specific test applications (horizontal/vertical phoria, torsion, etc). |
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